1   /**
2    * Copyright (c) 2000-2009 Liferay, Inc. All rights reserved.
3    *
4    *
5    *
6    *
7    * The contents of this file are subject to the terms of the Liferay Enterprise
8    * Subscription License ("License"). You may not use this file except in
9    * compliance with the License. You can obtain a copy of the License by
10   * contacting Liferay, Inc. See the License for the specific language governing
11   * permissions and limitations under the License, including but not limited to
12   * distribution rights of the Software.
13   *
14   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
17   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
18   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
19   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
20   * SOFTWARE.
21   */
22  
23  package com.liferay.util.servlet.filters;
24  
25  import com.liferay.util.servlet.Header;
26  import com.liferay.util.servlet.ServletResponseUtil;
27  
28  import java.io.IOException;
29  
30  import java.util.List;
31  import java.util.Map;
32  
33  import javax.servlet.http.HttpServletResponse;
34  
35  /**
36   * <a href="CacheResponseUtil.java.html"><b><i>View Source</i></b></a>
37   *
38   * @author Alexander Chow
39   */
40  public class CacheResponseUtil {
41  
42      public static void addHeaders(
43          HttpServletResponse response, Map<String, List<Header>> headers) {
44  
45          for (Map.Entry<String, List<Header>> entry : headers.entrySet()) {
46              String headerKey = entry.getKey();
47              List<Header> headerValues = entry.getValue();
48  
49              for (Header header : headerValues) {
50                  int type = header.getType();
51  
52                  if (type == Header.DATE_TYPE) {
53                      response.addDateHeader(headerKey, header.getDateValue());
54                  }
55                  else if (type == Header.INTEGER_TYPE) {
56                      response.addIntHeader(headerKey, header.getIntValue());
57                  }
58                  else if (type == Header.STRING_TYPE) {
59                      response.addHeader(headerKey, header.getStringValue());
60                  }
61              }
62          }
63      }
64  
65      public static void write(
66              HttpServletResponse response, CacheResponseData cacheResponseData)
67          throws IOException {
68  
69          addHeaders(response, cacheResponseData.getHeaders());
70  
71          response.setContentType(cacheResponseData.getContentType());
72  
73          ServletResponseUtil.write(response, cacheResponseData.getData());
74      }
75  
76  }